Answer:
Perimeter of rectangle ABCD = 32.8 unit (Approx.)
Step-by-step explanation:
Given:
Hypotenuse BD = 12 unit
Angle θ = 30°
Find:
Perimeter of rectangle ABCD
Computation:
Using trigonometry function
Sin θ = Perpendicular / Hypotenuse
Sin 30 = CD / BD
0.5 = CD / 12
Length of CD = 6 unit
Cos θ = Base / Hypotenuse
Sin 30 = BC / BD
0.866 = BC / 12
Length of BC = 10.4 unit
Perimeter of rectangle ABCD = 2[Length + Width]
Perimeter of rectangle ABCD = 2[6 + 10.4]
Perimeter of rectangle ABCD = 2[16.4]
Perimeter of rectangle ABCD = 32.8 unit (Approx.)
Answer:
1/2 duh dummy
Step-by-step explanation:
Y is all real numbers from 6 to negative infinity including 6 its self.
Interval Notation: (-∞,6].
<h3>What is the solution to the inequality phrase?</h3>
The word no more than means less than or equal to ( ≤ ).
Given the phrase in the question;
forty-six times y is no more than 276.
This translates to;
46 × y ≤ 276
Solve for y
46 × y ≤ 276
46y ≤ 276
Divide each term by 46
46y/46 ≤ 276/46
y ≤ 276/46
y ≤ 276/46
y ≤ 6
This show that y is all real numbers from 6 to negative infinity including 6 its self.
Interval Notation: (-∞,6].
Learn more about inequality here: brainly.com/question/20383699
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Answer:
Option (b).
Step-by-step explanation:
Given expression is :
8(1 + 2i) – (7 – 3i)
Using distributive property :
8+16i-7+3i
Taking like terms together,
1+19i
(1+19i) is the simplified expression for the given expression. He did not apply distributive property correctly for 8(1 + 2i). He forgets to multiply 8 with 2i.
M∠A = x
m∠B = 3x+24
m∠C = x + 51
x + 3x+24 + x + 51 = 180
5x + 75 = 180
5x = 180 - 75
5x = 105
x = 105/5
x = 21
m∠A = x = 21°
m∠B = 3x+24 = 3*21 + 24 = 87°
m∠C = x + 51 = 21 + 51 = 72°